Citazione Stile APA (7a Edizione)

Wagner, K. H., & Harbison, L. (2005). The American West: Exploring new worlds (Dr. A, 3.). Schöningh.

Citazione stile Chigago Style (17a edizione)

Wagner, Karl Heinz, e Larry Harbison. The American West: Exploring New Worlds. Dr. A, 3. Paderborn: Schöningh, 2005.

Citatione MLA (9a ed.)

Wagner, Karl Heinz, e Larry Harbison. The American West: Exploring New Worlds. Dr. A, 3. Schöningh, 2005.